Porous Mn‐Doped FeP/Co3(PO4)2 Nanosheets as Efficient Electrocatalysts for Overall Water Splitting in a Wide pH Range

Liu, Haoxuan; Peng, Xianyun; Liu, Xijun; Qi, Gaocan; Luo, Jun

doi:10.1002/cssc.201802437

Cited by 83 publications

(26 citation statements)

References 62 publications

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“…As a consequence, P sites act as proton-acceptor sites and metal sites act as hydride-acceptor sites, leading to high activity of NiCoP for hydrogen evolution process [24]. Recent works [51,52] have demonstrated that PO 4 3À species are beneficial for facilitating water molecule adsorption and promoting oxidation of metal ions for the proton coupled electron transfer procedure. Therefore, the PO 4 3À species on the surface can promote the HER process.…”

Section: àmentioning

confidence: 99%

Facile self-template fabrication of hierarchical nickel-cobalt phosphide hollow nanoflowers with enhanced hydrogen generation performance

et al. 2019

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Section: àmentioning

confidence: 99%

Facile self-template fabrication of hierarchical nickel-cobalt phosphide hollow nanoflowers with enhanced hydrogen generation performance

et al. 2019

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“…As shown in Figure S16b, the Ir 3 −Ni(OH) 2 /NF∥Ir 3 −Ni(OH) 2 /NF couple delivers the current densities of 10 and 50 mA ⋅ cm −2 at the potentials of 1.54 and 1.76 V in 1 M KOH solution, respectively. Moreover, Ir 3 −Ni(OH) 2 /NF∥Ir 3 −Ni(OH) 2 /NF couple requires a low potential of 1.64 V to afford 10 mA ⋅ cm −2 in 1 M PBS (Figure 4e), which is obviously lower than a string of recently reported neutral‐pH electrocatalysts (Figure 4f) [34–44] . Moreover, Ir 3 −Ni(OH) 2 /NF∥Ir 3 −Ni(OH) 2 /NF shows good stability for water electrolysis under alkaline condition and neutral‐pH water (Figure S14, S15).…”

Section: Resultsmentioning

confidence: 89%

“…Moreover, Ir 3 À Ni(OH) 2 /NF k Ir 3 À Ni(OH) 2 /NF couple requires a low potential of 1.64 V to afford 10 mA • cm À 2 in 1 M PBS (Figure 4e), which is obviously lower than a string of recently reported neutral-pH electrocatalysts (Figure 4f). [34][35][36][37][38][39][40][41][42][43][44] Moreover, Ir 3 À Ni(OH) 2 /NF k Ir 3 À Ni(OH) 2 /NF shows good stability for water electrolysis under alkaline condition and neutral-pH water ( Figure S14, S15).…”

Section: Resultsmentioning

confidence: 99%

Trace Iridium Engineering on Nickel Hydroxide Nanosheets as High‐active Catalyst for Overall Water Splitting

et al. 2020

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Designing cost-effective electrocatalysts for electrochemical water splitting to generate the hydrogen energy as a future energy source is pivotal. An excellent catalyst should show high catalytic activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) under different pH conditions. Here, we highlighted a high-efficient catalyst of Irdoped Ni(OH) 2 nanosheets grown on Ni foam (IrÀ Ni(OH) 2 /NF) as a high-efficient catalyst for overall water splitting in both alkaline and neutral conditions via a simple one-step hydro-thermal strategy. The optimized Ir 3 À Ni(OH) 2 /NF shows superior HER and OER activity in neutral and alkaline electrolytes. The doped Ir ions can not only serve as catalytic sites for water dissociation, but also decrease the charge density of the adjacent bridge oxygen to facilitate HER kinetics. As a result, Ir 3 À Ni(OH) 2 /NF electrolyzer exhibits superior performance of a small potential of 1.64 V under neutral condition, which is obviously lower than that of a string of recently reported neutral-pH electrocatalysts.

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“…Apart from the Tafel slope calculation methods, j o is an additional activity parameter of an electrocatalyst. It illustrates the reaction rate at equilibrium potential and displays the ability of catalysts to transport electrons [94] . Highly active catalysts with larger j o can drive electrochemical reaction with only a small j.…”

Section: An Overview Of Hzor Electrocatalysts: From Noble Metals To Nimentioning

confidence: 99%

Development Trends on Nickel‐Based Electrocatalysts for Direct Hydrazine Fuel Cells

2020

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Low temperature hydrazine fuel cells have been advocated as potential energy carriers by virtue of their exceptional power densities and carbon free containing byproducts. However, the large‐scale application of these renewable energy systems has been extremely inhibited by the insufficient performance and high cost of the state‐of‐art platinum (Pt) catalysts. To pursue better activity, electrocatalysts must demonstrate low operating overpotentials and high tolerances to poisoning species, which are critical factors for increasing the energy conversion efficiency. Despite the tremendous progress of Pt‐based catalysts, controlling sluggish kinetics on microscopic surfaces is still a serious issue because the accumulation of reaction product slugs onto surface may impede the liquid fuel transport to catalytic sites, resulting in a low activity. Thus, the development of earth abundant electrocatalysts with an improved activity is unambiguously a principal requirement. In this review, recent trends in the rational design and synthesis of Ni‐based electrocatalysts with various compositions for hydrazine oxidation reaction (HzOR) are summarized. In particular, development of multicomponent compounds and employment of Ni‐based materials for HzOR are demonstrated to be effective approaches from tuning the electrochemical performance of Ni‐based catalyst materials. Moreover, some potential challenges and prospects are deliberated to further advance the improvement of Ni‐based materials for effective HzOR.

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Porous Mn‐Doped FeP/Co₃(PO₄)₂ Nanosheets as Efficient Electrocatalysts for Overall Water Splitting in a Wide pH Range

Abstract: Supporting Information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

Cited by 83 publications

References 62 publications

Facile self-template fabrication of hierarchical nickel-cobalt phosphide hollow nanoflowers with enhanced hydrogen generation performance

Facile self-template fabrication of hierarchical nickel-cobalt phosphide hollow nanoflowers with enhanced hydrogen generation performance

Trace Iridium Engineering on Nickel Hydroxide Nanosheets as High‐active Catalyst for Overall Water Splitting

Development Trends on Nickel‐Based Electrocatalysts for Direct Hydrazine Fuel Cells

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